<https://archiveshub.jisc.ac.uk/data/gb102-ms380669>
<http://schema.org/about>
"Cocoa Production and Economic Development in the Nineteenth and Twentieth Centuries; 1993; conference"
<https://archiveshub.jisc.ac.uk/search/archives/27606ec3-9003-3440-81e8-b9891bcf8f5e>